Water / Wastewater 5
Annabelle with a completed logger installation in the mangroves ©SIF***
allows the separation of changes in water level related to the incoming tides from changes caused by rainfall.
The measurement data is collected autonomously and stored in the internal memory. The level probe uses two sensors, one submerged for the level measurement and another one above the water surface for atmospheric pressure. By subtracting the current atmospheric pressure, the level measurement is independent of weather changes and highly accurate. This allows it to detect the slightest changes in sea-level. Because the equipment is constantly exposed to the salty environment it needs to be resistant to corrosion. All outer parts are therefore made of titanium to ensure enduring, trouble-free operations. The electronics were also specifi cally modifi ed for increased memory capacity to account for the diffi culty in accessing the loggers on a regular basis. This allows the logger to record all three parameters for several months before reaching maximum storage capacity.
SIF staff transporting the equipment through the rough terrain ©URPP* / UZH**
KELLER‘s level loggers have been set-up in protective installations by Annabelle and the team. Since late 2019 they have been taking measurements every 10 minutes and provide valuable information for the science programme, Annabella’s PhD research and for the SIF management to plan daily activities in the Aldabra reserve. In the long run the insights gained from this scientifi c work will help preserve delicate eco-systems, counter damage caused by climate-change and hopefully play a part in saving our common habitat on this planet.
Author Contact Details Anatol Straub, KELLER AG für Druckmesstechnik • St. Gallerstrasse 119, CH-8404 Winterthur • Tel: +41 52 235 25 25 • Email:
info@keller-druck.com • Web:
www.keller-druck.com
Credit: UZH** / Annabelle Constance
Annabelle Constance PHD Student
Department of Evolutionary Biology and Environmental Studies University of Zurich
“I‘m glad that the people at KELLER helped me choose the right solution for my project. Reliability and low maintenance are key for environmental monitoring.“
* University Research Priority Programme on Global Change and Biodiversity ** University Zurich
*** Seychelles Islands Foundation
GWF fl ow monitoring technology now available from new UK offi ces
GWF MessSysteme AG is very proud to announce that we have opened a sales and service offi ce in the UK. GWF Ltd is based in Silsoe near Bedford. Our UK leadership team of Gary Vincent, Managing Director, and Andrew Longden, Sales & Business Development Director, bring more than 50 years of combined industry experience.
GWF has been designing and manufacturing innovative measurement solutions for valuable resources since its founding in Lucerne, Switzerland in 1899. Our metering technology helps utility and industrial clients meet their water conservation, pollution prevention and carbon reduction objectives as well as ensuring compliance with Environmental Agency regulations. We utilise the latest state-of-the-art technologies such as our Q-Eye PSC to measure water and wastewater fl ows highly accurately and provide the connectivity required to ensure you can turn data into value-adding information.
The Q-Eye PSC is an area velocity meter featuring highly accurate measurement of open channel and partially fi lled pipe fl ows using pulse–coherent cross correlation. This class leading technology combines both level and velocity measurement in a single device. The water fl ow is measured in up to 32 cells, ensuring velocity profi les are precisely measured. The sensor can be mounted off-centre up to 15° and will compensate for any misalignment during installation. The unique compact design helps to reduce fouling and reduce costly service visits and is available with a wide range of installation accessories. The Q-Eye transmitter comes equipped with multiple industry standard outputs including 4-20 mA, MODBUS and Pulse. Each device is equipped with an on- board web server allowing connection from any standard web browser allowing remote set-up and parameterization using the GWF WebUI application. Typical applications for Q-Eye PSC include inlet fl ows at wastewater treatment works, storm outfl ows and industrial sewer fl ow monitoring. We look forward to providing your fl ow monitoring needs, please contact us for more information.
More information online:
ilmt.co/PL/Py1P For More Info, email:
email: For More Info, email:
57543pr@reply-direct.com
Q-EYE Innovation for Wastewater Measurement
GWF’s Q-Eye range features innovative measurement technologies for open channel & partially filled pipes, helping you:
→ Prevent Pollution Events → Optimise Treatment Plant Operation → Meet Regulatory Requirements → Reduce Operating Costs
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gwf-group.com
WWW.ENVIROTECH-ONLINE.COM
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